Here are Some Tips and Tricks to Help Improve Performance of Drupal
Aggregate your css and js files. (Compress css and js files)
Compress pages on the fly, by enabling and using GZip compression.
Enable Drupal's default mode page cache.
Enable Drupal agressive mode page cache.
Enable css and javascript compression.
Enable mod_deflate.Enable APC.
Host your site on a dedicated server or VPS hosting environment.
Implement a Content Delivery Network (CDN).
Compress pages on the fly, by enabling and using GZip compression.
Enable Drupal's default mode page cache.
Enable Drupal agressive mode page cache.
Enable css and javascript compression.
Enable mod_deflate.Enable APC.
Host your site on a dedicated server or VPS hosting environment.
Implement a Content Delivery Network (CDN).